Basically been having problems since getting the car in February this year. I put it down at first to extension cables but now have had an outside socket for 2 months. I’ve charged it 35 times at home since getting it, 5 times its failed to charge and at least 12 times its been very slow to charge (lost count after 10). No solar panels on our street and only a couple in the area.
Think I’ll give Renault customer services a ring and see what they have to say.

They will say tough. Have you actually checked the voltage at you home?

A £4 multimeter is all that is required. That way you would know for sure if it is the supply voltage or something else. Obviously don’t do this if you are not sure what you are doing. It would be shocking if you got it wrong.

At least once you have tested the voltage at different time you would be in a better position to argue with the relevant people - The National Grid or Renault.

Over 253V National grid have to fix by law.
Between 248v and 253v Renault should help.
Between 216.2v and 253v it is a fault with the charger.
Below 216V National grid needs to resolve.

Parents have a chap round quoting for solar panels, and he said he checked the output and was 245 volts, then showed me as I’d been out to collect my twizy and it had gone up to 247 volts. He had his leaf in the other socket and it was happily charging away.

Renault know about this, they just aren’t fixing it. Sadly, since you’re in a very small minority (like, of all the thousands of Twizy’s sold there’s probably about 20 people this affects worldwide (total guess)) I don’t fancy your chances of getting anything out of them. At best I imagine if you bought your Twizy new and you took Renault to court, or threated to seriously enough, you might be able to return it and get a refund and as it’s not fit for purpose. Assuming you want to keep it though, you’re better off finding yourself a way of getting that voltage down a bit.

The voltage was flicking between 246 & 247v as I plugged it in. Just over 3 hours charge so far and it’s put 32% in. I’ve been in touch with Renault and I’m going to try and return it as its not fit for purpose and as this is my main vehicle for commuting etc, I can’t rely on it. I could expect these problems 4 years ago when they first came out but not now.

I have spoken to Renault today and got a price and the dealer that sold me the car has agreed to go halves with me which I think is fair. Just going to try and negotiate a discount now.

Update: ordered the charger and should be in on Friday. managed a 10% discount so £660 inc VAT.

27/7 update. Picked up the charger today, it took about 30 mins to swap it out. Now I have a charger where the fan turns off when the traction battery is full and it keeps on topping up the 12 v battery whilst plugged in.